| about us | advertise | careers | links |

[an error occurred while processing this directive]


CPU Utilization & MP3 Encoding Rates

MP3 Bitrate
Utilization
@ 533 MHz
Utilization
@ 800 MHz
Max Encode Rate
64Kb/s
75%
65%
9.4 X
128Kb/s
65%
55%
6.4 X
320Kb/s
45%
35%
3.6 X

I was genuinely surprised at the ratio at which CPU utilization increased with bitrate encoding. I thought that an inverse proportion would have been reflected in the tests, but I was wrong. The Utilization rises with lower bitrates due to higher DAE (digital audio extraction) rates from the CD-ROM. Based on the above results, I have revised system recommendations from factory specs.

System Recommendations

Component
Factory Minimum
Factory Optimum
TargetPC Minimum
Test System
CPU
200 MHz
300 MHz
350 MHz
C2 @ 533 & 800
RAM
64MB
128MB
128MB
128MB
Free HD Space
50MB
50MB
50MB
8GB
Operating System
Win98 w/USB
Win98 w/USB
Win98 w/USB
Win98SE w/USB
CD-ROM Speed
Not Specified
Not Specified
24X (12X DAE)
40X (24X DAE)

It's worthy to note that the 40X CD-ROM is none other than the Plextor 40X max from the Plextor Combo I've previously reviewed. Using the Tekram DC-315/U SCSI PCI card, my test setup was about as good as it gets. I'm suggesting, to avoid headaches, that nothing less than a Pentium II 350 MHz processor with a CD-ROM capable of solid 12X DAE be the minimum. It's conceivable that with the TargetPC minimum setup, CPU utilization would hover in the 85-90% range, which is rather annoying if you can't do anything else while encoding. Of particular note was that the encoding process did not appear to use any RAM whatsoever. I paid close attention to the Windows resource meter and it stood firm at 60MB free for an entire 600MB CD ripping session.

Conclusion

It's expensive and it's the best at what it does. The Hy-Tek MusicCompressor nabs an 8 out of 10 rating and the editor's choice award. I couldn't make this black box skip and the marriage of the HD and RAM creates a product that is most desirable. The outdated LCD panel could be improved, but it's current functionality cannot. If you have the bucks and can't stand 30-60 minutes of MP3 storage, lay your hands on the PJB-100, you'll love it.

William Yaple
5/16/00





Web Target PC




 

[an error occurred while processing this directive]

Contact us | About us | Advertise
Copyright 1999-2007 TargetPC.com. All rights reserved. Privacy information.


targetpc